Elements of design are like the building blocks of design. They are the effects we actually use in a design. There are mainly 6 elements of design. They are point, line, colour, shape, movement and texture.
Point- A point or a dot is a coordinate in space. It does not have any dimension or area. It is the most basic building block for everything.
Line- A line could be represented as a series of adjacent points. It has one dimension (by definition), but to see it, one needs two dimensions. It could be used to represent a lot of things (direction, movement, etc.) Check out the following image; which line segment is longer?
In this Müller-Lyer illusion although you may perceive (like most people the world over) that line (a) is longer than line (b), you can quickly confirm that they are the same lengths. Even armed with the knowledge that they are the same length, line (a) still appears longer than line (b).
Colour- Colour is nothing but how we see the reflection of light waves. It is probably the most most effective element of design.
Shape/Silhouette - A shape is a two dimensional form, without any depth. A silhouette is a shape or outline seen from a distance.
The image above is a static, the beans are NOT moving. This brings us to the next element of design - movement
Texture could be two dimensional (visual) or three dimensional (tactile).
A shape is defined as an area that stands out from the space next to or around it due to a defined or implied boundary, or because of differences of value, color, or texture. A form is an object having three dimensions like length, width and depth. 
